Vacuum paper feeding structure for corrugated paper printing

Abstract

A vacuum paper feeding structure for corrugated paper printing comprises two opposite racks and a plurality of printing rollers which are arranged side by side, the two ends of each printing roller are rotationally connected to the racks, and the vacuum paper feeding structure further comprises vacuum boxes, a paper feeding device and a paper feeding device, the impressing roller is rotationally connected into the vacuum box; the transmission shafts are arranged side by side and are arranged on the two sides of the impressing roller respectively, and a plurality of paper feeding wheels which are arranged at equal intervals are fixedly arranged on the transmission shafts in the axial direction. When the transmission shaft drives the paper feeding wheel to rotate, the paper feeding wheel conveys a corrugated paper book towards the printing roller and the impressing roller, the paper board is adsorbed on the cover body of the vacuum box and is supported by the paper feeding wheel, and therefore it can be guaranteed that the paper feeding wheel makes contact with the paper board more compactly and reliably; and when the paper feeding wheels rotate to convey corrugated boards, the conveying precision and stability of corrugated paper can be guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of paper feeding of printing machines, in particular to a corrugated paper printing paper feeding structure. Background Art

[0002] In the processing of corrugated board printing, usually a number of drive shafts are horizontally arrayed on a frame to drive the cardboard, and at the same time pass between a printing roller and an impression roller, so as to print a pattern on the corrugated board. However, during the transportation of the corrugated board, since the corrugated board is placed on the conveying shaft for transportation, due to the slipping of the corrugated board and other conditions, the transportation accuracy of the corrugated board is often not high, resulting in poor printing quality. Therefore, there is an urgent need for a structure that can stably and accurately transport the cardboard at present. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a corrugated paper printing vacuum paper feeding structure to solve the above technical problems.

[0004] The technical solution adopted by the utility model to provide a corrugated paper printing vacuum paper feeding structure is as follows:

[0005] A corrugated paper printing vacuum paper feeding structure includes two opposite frames and a number of printing rollers arranged side by side and rotatably connected to the frames at both ends. It further includes:

[0006] A vacuum box, the vacuum box is provided with a number corresponding to the plurality of printing rollers and is located below the printing rollers. Both ends of the vacuum box are respectively arranged on the frames. The vacuum box includes a box body with a chamber formed inside, and further includes a cover body for closing the chamber. An air outlet pipe communicating with the outside is arranged on the box body.

[0007] An impression roller, including a plurality corresponding to the printing rollers, are respectively rotatably connected inside the vacuum box, and an opening is formed on the cover body for a part of the impression roller to protrude and roll with the printing roller.

[0008] Drive shafts, a number of drive shafts are arranged side by side and on both sides of the impression roller respectively, and both ends are rotatably connected inside the vacuum box and are in transmission connection with the impression roller. A number of paper feeding wheels are fixedly installed on the drive shafts at equal intervals along the axial direction. A window is formed on the cover body for a part of the paper feeding wheels to protrude, and the window transmits the negative pressure inside the vacuum box to the upper side of the cover body.

[0009] Further, the box body includes

[0010] An upper box body, the impression roller and a number of the drive wheels are rotatably connected inside the upper box body;

[0011] A support bellows, which is fixedly installed on the lower side of the upper box body, and a sealing plate is arranged between the support bellows and the upper box body to isolate them from each other into two independent spaces. A ventilation hole is opened above the sealing plate to communicate the upper box body and the support bellows with each other. The air outlet pipe is fixedly installed on the support bellows to communicate the support bellows with the outside;

[0012] A connecting pipe is arranged between two adjacent support bellows to communicate the two adjacent support bellows with each other.

[0013] Furthermore, sliding components are arranged at both ends of the vacuum box for sliding connection with the frame in the vertical direction. The sliding components include guide rails arranged and fixedly connected to the frame in the vertical direction, sliders slidably connected to the guide rails, and connecting blocks fixedly connected to the sliders. The connecting blocks are fixedly connected to the box body of the vacuum box.

[0014] Furthermore, a number of intermediate support plates spaced from each other are fixedly arranged inside the upper box body. One end of the intermediate support plate is fixedly connected to the sealing plate and the other end is fixedly connected to the cover body to divide the upper box body into several parts. And holes for the transmission shaft and the impression roller to be rotatably connected therein are arranged on the intermediate support plates. Air vents are also opened on the intermediate support plates to communicate the several parts divided by the intermediate support plates in the upper box body with each other.

[0015] Furthermore, the ventilation opening is arranged at the middle position of the sealing plate so that several intermediate support plates are distributed on both sides of the ventilation hole.

[0016] Furthermore, a closing component for opening or closing the air vent is arranged on the upper box body. The closing component includes

[0017] A damper shaft, which is rotatably connected inside the upper box body, and one end thereof is bent to form a driving end;

[0018] A damper cylinder, the cylinder body of which is rotatably connected to the support bellows / upper box body, and its piston rod is movably connected to the driving end to drive the damper shaft to rotate around its axis;

[0019] A damper plate, one end of which is fixedly connected to the damper shaft and the other end extends in a direction away from the damper shaft, to swing with the rotation of the damper shaft to open or close the air vent.

[0020] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0021] During the process of printing corrugated cardboard, the corrugated cardboard is placed on the upper side of the cover of the vacuum box. The vacuum box is connected to an external air extraction device through an air outlet pipe, so that a negative pressure is formed within the chamber of the vacuum box, and the adsorption force generated by the negative pressure is transmitted to the upper side of the cover through the window and opening of the cover, thereby adsorbing the corrugated cardboard on the cover. When the drive shaft drives the paper feed wheel to rotate, the paper feed wheel conveys the corrugated paper towards the printing roller and the impression roller. By adsorbing the cardboard on the cover of the vacuum box and supporting it by the paper feed wheel, it can ensure that the contact between the paper feed wheel and the cardboard is tighter and more reliable, and can ensure the conveying accuracy and stability of the corrugated cardboard when the paper feed wheel rotates to convey the corrugated cardboard.

[0022] Since multiple vacuum boxes are designed to be interconnected structures, it can ensure that the pressures within the multiple vacuum boxes are the same, so that the adsorption forces received by the corrugated cardboard during the conveying process along each vacuum box are the same, thereby ensuring that the same adsorption force is maintained throughout the process of conveying the corrugated cardboard, and can improve the accuracy and stability of the corrugated cardboard.

[0023] The following further describes the present utility model in conjunction with the specification drawings and embodiments. Brief Description of the Drawings

[0024] Figure 1 is a structural schematic diagram of the present utility model.

[0025] Figure 2 is an exploded structural schematic diagram of the present utility model.

[0026] Figure 3 is a structural schematic diagram of the vacuum box in the present utility model.

[0027] Figure 4 is an exploded structural schematic diagram of the vacuum box in the present utility model.

[0028] Figure 5 is Figure 4 a partial enlarged view of part A in Detailed Embodiments

[0029] In order to make the technical problems, technical solutions and beneficial effects solved by the present utility model clearer, the following further details the present utility model in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0030] It should be noted that in the embodiments of the present utility model, all directional indications (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0031] In addition, the descriptions of “first”, “second”, etc. in the embodiments of the present invention are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features.

[0032] The embodiment of the utility model provides a vacuum paper feeding structure for corrugated paper printing, which is used to convey corrugated paperboard during the process of corrugated paper printing. During the conveying process, the paperboard can be adsorbed on the surface of the cover body 220, and accurately conveyed under the rotation of the conveying shaft. Moreover, by connecting multiple vacuum boxes 200 to each other, the adsorption force received by the corrugated paperboard can be uniform, thereby avoiding deviation during the conveying process and making the conveying more stable.

[0033] like Figures 1 - 5 As shown, a corrugated paper printing vacuum paper feeding structure includes two mutually opposed frames 100 and a plurality of printing rollers 101 arranged side by side and rotatably connected to the frames 100 at both ends, and also includes: a vacuum box 200, an impression roller 202 and a transmission shaft 204, wherein the vacuum box 200 is provided with a number corresponding to the plurality of printing rollers 101 and is located below the printing rollers 101, and the two ends of the vacuum box 200 are respectively arranged on the frames 100, and the vacuum box 200 includes a box body 210 with a chamber formed therein, and also includes a cover body 220 for closing the chamber, and an air outlet pipe 201 communicating with the outside is arranged on the box body 210; each vacuum box 200 has a vacuum box 210 formed therein, and a vacuum box 210 is provided with a vacuum box ... The embossing roller 202 is rotatably connected inside, and an opening 221 is provided on the cover body 220 for partially leaking out of the embossing roller 202 and rolling against the printing roller 101; similarly, a plurality of transmission shafts 204 are rotatably connected inside each vacuum box 200, and the plurality of transmission shafts 204 are arranged side by side and respectively on both sides of the embossing roller 202, and both ends thereof are rotatably connected inside the vacuum box 200 and are transmission-connected to the embossing roller 202, and a plurality of paper feed wheels 205 arranged at equal intervals are fixedly installed axially on the transmission shaft 204, and a window 222 is provided on the cover body 220 for partially leaking out of the paper feed wheel 205, and the window 222 transmits the negative pressure inside the vacuum box 200 to the upper side of the cover body 220.

[0034] During the printing process of corrugated cardboard, the corrugated cardboard is placed on the upper side of the cover 220 of the vacuum box 200. The vacuum box 200 is connected to an external air extraction device through an air outlet pipe 201, so that a negative pressure is formed within the chamber of the vacuum box 200, and the adsorption force generated by the negative pressure is transmitted to the upper side of the cover 220 through the window 222 and the opening 221 of the cover 220, thereby adsorbing the corrugated cardboard on the cover 220. When the transmission shaft 204 drives the paper feed wheel 205 to rotate, the paper feed wheel 205 conveys the corrugated paper towards the printing roller 101 and the impression roller 202. By adsorbing the cardboard on the cover 220 of the vacuum box 200 and supporting it by the paper feed wheel 205, it can be ensured that the contact between the paper feed wheel 205 and the cardboard is tighter and more reliable, and when the paper feed wheel 205 rotates to convey the corrugated cardboard, the conveying accuracy and stability of the corrugated paper can be ensured.

[0035] In this embodiment, the box body 210 includes an upper box body 211 and a support air box 212, as Figures 3 - 5 shown. Among them, the impression roller 202 and several transmission wheels are rotatably connected within the upper box body 211; the support air box 212 is fixedly installed on the lower side of the upper box body 211, and a sealing plate 213 is provided between the support air box 212 and the upper box body 211 to isolate them from each other into two independent spaces. A ventilation hole 214 is opened on the sealing plate 213 to communicate the upper box body 211 with the support air box 212. The air outlet pipe 201 is fixedly installed on the prime support air box 212 to communicate the support air box 212 with the outside; it is arranged between two adjacent support air boxes 212 and communicates the two adjacent support air boxes 212 with each other.

[0036] By connecting several vacuum boxes 200 to each other through a connecting pipe 215 to form a whole, the pressures within several upper box bodies 211 are made the same, so that during the process of the cardboard being conveyed on each vacuum box 200, it can receive the same adsorption force, and further the stability of the corrugated cardboard being conveyed on each vacuum box 200 can be ensured, and the situation of the corrugated cardboard running off due to different adsorption forces will not occur, ensuring the conveying accuracy. Secondly, by arranging the air outlet pipe 201 on the support air box 212, after several support air boxes 212 are first connected, the support air boxes 212 form a negative pressure source with a stable negative pressure, so that air can be extracted from several upper box bodies 211, so that each upper box body 211 has the same negative pressure under the action of the same negative pressure source, and further the corrugated cardboard located on the cover 220 can be stably adsorbed, and the adsorption force received by the corrugated cardboard on each upper box body 211 is the same, ensuring the accuracy and stability during the conveying process.

[0037] Since the multiple vacuum boxes 200 are designed to be interconnected, the pressure inside the multiple vacuum boxes 200 can be kept the same, so that the adsorption force received by the corrugated cardboard during the transportation along each vacuum box 200 is the same, thereby ensuring that the same adsorption force is always maintained during the transportation of the corrugated cardboard, and the accuracy and stability of the corrugated cardboard can be ensured.

[0038] In this embodiment, sliding assemblies 230 are provided at both ends of the vacuum box 200 for slidingly connecting with the frame 100 in the vertical direction. The sliding assembly 230 includes a guide rail 231 provided in the vertical direction and fixedly connected to the frame 100, a slider 232 slidably connected to the guide rail 231, and a connecting block 233 fixedly connected to the slider 232. The connecting block 233 is fixedly connected to the body of the vacuum box 200. The height position of the vacuum box 200 can be conveniently adjusted by the sliding assembly 230, and the height position of the embossing roller 202 can also be conveniently and quickly adjusted. In particular, during the installation process, the position of the embossing roller 202 can be adjusted by the sliding assembly 230 to facilitate the transmission connection with the output shaft of the driving motor through a bushing or a reducer.

[0039] Furthermore, a plurality of intermediate support plates 216 spaced apart from each other are fixedly arranged in the upper box body 211, one end of the intermediate support plates 216 is fixedly connected to the sealing plate 213 and the other end is fixedly connected to the cover body 220, so as to divide the upper box body 211 into a plurality of parts, and each intermediate support plate 216 is provided with a hole 217 for the transmission shaft 204 and the embossing roller 202 to be rotatably connected therein, and an air vent 218 is also provided on the intermediate support plate 216, so that the plurality of parts divided into the upper box body 211 by the intermediate support plates 216 are connected to each other. By arranging the intermediate support plates 216 in the upper box body 211, the transmission shaft 204 and the embossing roller 202 can be supported, and the situation of downward bending caused by the relatively long axis size of the transmission shaft 204 and the embossing roller 202 can be avoided, so as to avoid affecting the performance of the equipment.

[0040] In this embodiment, if Figures 4 - 5 As shown, the vent 218 is arranged in the middle position of the sealing plate 213, so that a plurality of middle support plates 216 are distributed on both sides of the vent 214, so that in the process of drawing vacuum on the upper box body 211 by the same negative pressure source composed of a plurality of supporting bellows 212 connected to each other, the air pressure at various places in the upper box body 211 can be made substantially the same.

[0041] In this embodiment, if Figures 4 - 5As shown in the figure, a closing assembly 240 for opening or closing the air vents 218 is provided above the upper box body 211. During the transportation of corrugated cardboard with a smaller size, some of the air vents 218 can be closed, thereby reducing the area of the negative pressure region on the cover body 220. At the same time, the power of the air extraction device connected to the air outlet pipe 201 can also be appropriately reduced, saving energy. Similarly, during the transportation of corrugated cardboard with a larger area size, several air vents 218 can be appropriately opened, so as to enable the transportation of large-size corrugated cardboard. By setting the closing assembly 240, the vacuum box 200 can be used to transport corrugated cardboard of different sizes, and the power of the air extraction device can be appropriately adjusted, making the energy utilization more reasonable and scientific. As Figures 4 - 5 As shown in the figure, the closing assembly 240 includes a damper shaft 241, a damper cylinder 243, and a damper plate 244. Among them, the damper shaft 241 is rotatably connected inside the upper box body 211, and one end thereof is bent to form a driving end 242; the cylinder body of the damper cylinder 243 is rotatably connected to the support air box 212 / the upper box body 211, and its piston rod is movably connected to the driving end 242 to drive the damper shaft 241 to rotate around the axis; one end of the damper plate 244 is fixedly connected to the damper shaft 241, and the other end extends in a direction away from the damper shaft 241, so as to swing with the rotation of the damper shaft 241 to open or close the air vents 218.

[0042] For those skilled in the art, various corresponding changes and deformations can be obtained according to the structure and principle disclosed by the present invention, and all these changes and deformations fall within the protection scope of the present invention.

Claims

1. A vacuum paper feeding structure for corrugated paper printing, comprising two mutually opposed frames and a plurality of printing rollers arranged side by side and rotatably connected to the frames at both ends, characterized in that: Also included are: A vacuum box, wherein the vacuum box is provided with a number corresponding to the number of the printing rollers and is located below the printing rollers, and both ends of the vacuum box are respectively arranged on the frame, and the vacuum box includes a box body with a chamber formed inside, and also includes a cover body that closes the chamber, and an air outlet pipe that is interconnected with the outside is arranged on the box body; The embossing rollers include a plurality of rollers corresponding to the printing rollers and are rotatably connected to the vacuum box respectively, and the cover body is provided with an opening for the embossing roller to partially leak out and roll against the printing roller; A transmission shaft, wherein a plurality of transmission shafts are arranged side by side and on both sides of the embossing roller, and both ends of the transmission shafts are rotatably connected in the vacuum box and are transmission-connected to the embossing roller. A plurality of paper feed wheels arranged at equal intervals are fixedly mounted on the transmission shaft along the axial direction, and a window is provided on the cover body for partially leaking the paper feed wheel, and the window transmits the negative pressure in the vacuum box to the upper side of the cover body.

2. A corrugated paper printing vacuum paper feeding structure according to claim 1, characterized in that: The box body includes An upper box body, wherein the embossing roller and a plurality of transmission wheels are rotatably connected to each other; A support bellows, the support bellows is fixedly mounted on the lower side of the upper box body, and a sealing plate is provided between the support bellows and the upper box body to isolate them from each other into two independent spaces, a ventilation hole is provided on the sealing plate to connect the upper box body and the support bellows, and the air outlet pipe is fixedly mounted on the support bellows to connect the support bellows with the outside; The connecting pipe is arranged between two adjacent supporting bellows and connects the two adjacent supporting bellows to each other.

3. The vacuum paper feeding structure for corrugated paper printing according to claim 1, characterized in that: Sliding assemblies are provided at both ends of the vacuum box for sliding connection with the frame in a vertical direction. The sliding assemblies include a guide rail provided in a vertical direction and fixedly connected to the frame, a slider slidably connected to the guide rail, and a connecting block fixedly connected to the slider, and the connecting block is fixedly connected to the vacuum box body.

4. A vacuum paper feeding structure for corrugated paper printing according to claim 2, characterized in that: A plurality of mutually spaced intermediate support plates are fixedly arranged inside the upper box body, one end of the intermediate support plate is fixedly connected to the sealing plate and the other end is fixedly connected to the cover body, so as to divide the upper box body into a plurality of parts, and the intermediate support plates are provided with holes for the transmission shaft and the embossing roller to be rotatably connected therein, and air vents are also provided on the intermediate support plates, and the air vents are used to interconnect the plurality of parts divided by the plurality of intermediate support plates.

5. A vacuum paper feeding structure for corrugated paper printing according to claim 4, characterized in that: The ventilation opening is arranged at the middle position of the sealing plate, so that a plurality of the middle support plates are distributed on both sides of the ventilation hole.

6. A vacuum paper feeding structure for corrugated paper printing according to claim 5, characterized in that: A closing component for opening or closing the air outlet is arranged on the upper box body, and the closing component includes: A damper shaft, the damper shaft is rotatably connected inside the upper box body, one end of which is bent to form a driving end; A damper cylinder, wherein the damper cylinder body is rotatably connected to the supporting bellows / upper box body, and the piston rod thereof is movably connected to the driving end to drive the damper shaft to rotate around the axis; A damper plate, one end of which is fixedly connected to the damper shaft, and the other end of which extends in a direction away from the damper shaft, so as to swing with the rotation of the damper shaft to open or close the air outlet.

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